Home › Parts › GeneralAire 1099-20 Water Panel (Legacy Slant Fin fit)
GeneralAire 1099-20 Water Panel (Legacy Slant Fin fit)
OEM part number(s): 1099-20, 1099 20 · Made by GeneralAire (GFI) · Whole-house water panel / pad
Verified prices (checked 2026-11-11)
| Option | Price | Store & shipping |
|---|---|---|
| Genuine (OEM) 1 panel, genuine GeneralAire 1099-20 | $12.80 | FM Distributing FM Distributing shipping terms at checkout · Checked 2026-11-11 · source |
No aftermarket price was verified for the 1099-20 this pass.
How to read this: the lowest verified price above is the headline even when it is not Amazon. Amazon is the buy button because it is this site's affiliate route; its price is not quoted because Amazon blocks automated price reads.
Exact fit — models that take this part
Slant Fin GF-200, Slant Fin GF-210, Slant Fin GF-211, Slant Fin GF-220, Slant Fin GF-240, Slant Fin GF-350
How many per change: LEGACY: this is the GeneralAire panel for the old Slant Fin GF-200/GF-210/GF-211/GF-220/GF-240/GF-350 humidifiers — Slant Fin's humidifier line is long discontinued, but the panels are still sold.
Specifications
| Replacement interval | Replace annually (FM Distributing). |
|---|---|
| Dimensions | 9.92 × 12.01 × 1.65 in (one retailer's spec; another states only 1-year life). |
| Treatment | Nominal 950 sq in evaporation area; MERV 8 nominal. |
Equivalents and cross-references
| Brand | Part number | Note |
|---|---|---|
| BestAir | GF35 / A35 | BestAir equivalent family. |
Sources
- https://fmdistributing.com/products/generalaire-1099-20-evaporator-pad-for-gf-200-210-211-220-240
- https://www.supplyhouse.com/sh/control/product/~product_id=1099-20
Full record, including descriptor data for every model, is in the open dataset: /data/parts.json.